Centrifugal roller die casting tool and casting process thereof

Abstract

The invention relates to the technical field of centrifugal roller casting, in particular to a centrifugal roller die casting device and a casting process thereof. The centrifugal roller die casting device comprise a first metal cold mold, a second metal cold mold, a base, a pouring funnel pipe and a pouring pipe, wherein the first metal cold mold is coaxially connected to the upper end of the second metal cold mold; the second metal cold mold is coaxially connected to the upper end of a circular cavity; the pouring funnel pipe is coaxially connected to the upper end of the pouring pipe; the pouring pipe is coaxially connected to the upper end of a square cavity; a main sand core is coaxially connected inside the first metal cold mold and the second metal cold mold; the upper end of the main sand core is connected with an upper sand core; second cavities are formed between the main sand core, the upper sand core, the inner wall of the first metal cold mold and the inner wall of the second metal cold mold; refractory pipeline bricks are arranged in the base, the pouring funnel pipe and the pouring pipe; a first cavity is formed in the refractory pipeline bricks; and the first cavitycommunicates with the second cavity. According to the centrifugal roller die casting device and the casting process thereof, the method is simple, and the operation is simple, convenient, safe and reliable, so that the quality is conveniently controlled, and the manufacturing cost is reduced; and the internal casting defects of a centrifugal roller die can be eliminated, so that the tissue compactness is improved.

Description

technical field [0001] The invention relates to the technical field of centrifugal roll casting, in particular to a centrifugal roll die casting device. Background technique [0002] The centrifugal roll mold is a special tool for pouring the outer metal liquid of the centrifugal roll. The centrifugal roller mold is placed on a centrifuge with a rotating speed of 850--1100r / min. Through the pouring system, the metal liquid at a temperature of 1360-1460°C is poured into the centrifugal roller mold, and the centrifugal roller mold is used to transfer the metal liquid in the centrifugal roller mold The medium gas and impurities are centrifuged to the outer layer to ensure that the internal structure of the outer layer of the roll body is dense and reduce casting defects. [0003] Since the centrifugal roller mold is in a high-speed and high-temperature state for a long time, once the roller mold is used abnormally during the rotation process, the metal liquid will fly out of t...

AI Technical Summary

Problems solved by technology

According to the conventional production mode of steel castings, sand molding is used; there are two ways to shape circular castings: one is to split the semicircle from the largest diameter, and place them in the upper and lower sand boxes respectively, and the pouring riser is placed in the upper semicircle, and the defects remain In the upper part of the body, the overall quality of the centrifugal roller mold is inconsistent; the second is the vertical casting of the whole circle, the outer chilled iron is placed at the bottom of the outer circle, and the pouring riser is set on the top. Affected by the height, shrinkage cavities and shrinkage porosity are likely to exist in the upper part of the roller mold blank ; Although nodular iron parts have self-feeding performance, if the conventional casting method is used, the internal structure of the casting is loose, similar to that of steel castings, and the non-destructive testing is not good enough to be put on site; , there are potential safety hazards; the centrifugal roller mold has shrinkage cavities and slag inclusions visible to the naked eye, and repair welding is not allowed; considering the safety and economy of the centrifugal roller mold, a simple and practical casting method is urgently needed

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